How many sex chromosomes are there in a normal human karyotype?

A. 4

B. You only need one sex chromosome, and that determines if you are a male or female.

C. 2

I'm confused ...

What is sexual harras means

What is the term for the process of blinking?

True or false : an ecological hotspot is a place where there is very little danger to the habitat and species extinction

Brown eyes are dominant over blue eyes. If two brown eyed parents have a child with blue eyes, what does it mean about parent's genotype? • A. They must both be homozygous dominant. • B. One must be heterozygous. • °C. They must both be heterozygous.

What is a difference between the oxidation of coal when it is burned and the oxidation of glucose during cellular respiration?

Why is the theory of abiogenesis just another example of the idea of spontaneous generation?

What is the role of the plasma cell in the antigen-antibody response? makes an antigen harmless without destroying it produces antibodies against the sensitizing antigen produces antibodies after an exposure to a known antigen clumps

Why do most plants have green leaves?

When a plant produces sugars and transports them during translocation, which main plant tissues are at work? dermal and meristem dermal and vascular ground and dermal vascular and ground

Which of the following is an example of an X-linked recessive disorder? A. Sickle cell disease B. Methemoglobinemia C. Color blindness D. Huntington disease